function emailCheck(str) {

	var at = "@"
	var dot = "."
	var lat = str.indexOf(at)
	var lstr = str.length
	var ldot = str.indexOf(dot)
	if (str.indexOf(at) == -1) {
		alert("Invalid E-mail ID")
		return false
	}

	if (str.indexOf(at) == -1 || str.indexOf(at) == 0
			|| str.indexOf(at) == lstr) {
		alert("Invalid E-mail ID")
		return false
	}

	if (str.indexOf(dot) == -1 || str.indexOf(dot) == 0
			|| str.indexOf(dot) == lstr) {
		alert("Invalid E-mail ID")
		return false
	}

	if (str.indexOf(at, (lat + 1)) != -1) {
		alert("Invalid E-mail ID")
		return false
	}

	if (str.substring(lat - 1, lat) == dot
			|| str.substring(lat + 1, lat + 2) == dot) {
		alert("Invalid E-mail ID")
		return false
	}

	if (str.indexOf(dot, (lat + 2)) == -1) {
		alert("Invalid E-mail ID")
		return false
	}

	if (str.indexOf(" ") != -1) {
		alert("Invalid E-mail ID")
		return false
	}

	return true
}

function ValidateForm() {
	var name = document.contactForm.Field6;
	if ((name.value == null) || (name.value == "")) {
		alert("Please a valid Name");
		name.focus()
		return false
	}
	var lastName = document.contactForm.Field7;
	if ((lastName.value == null) || (lastName.value == "")) {
		alert("Please a valid last name.");
		lastName.focus()
		return false
	}

	var emailID = document.contactForm.Field2;
	if ((emailID.value == null) || (emailID.value == "")) {
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (emailCheck(emailID.value) == false) {
		emailID.focus()
		return false
	}
	
	var msg = document.contactForm.Field1;
	if ((msg.value == null) || (msg.value == "")) {
		alert("Please a valid Message");
		msg.focus()
		return false
	}
	return true
}
